Heat exchanger for wasted heat with its cleaning apparatus

Details Heat exchanger for wasted heat with its cleaning apparatus Heat exchanger for wasted heat with its cleaning apparatus

2006-03-21

2006-03-21

Duong, Tho (Department: 3753)

Heat exchange

With cleaning means for heat exchanger

C134S103300, C134S144000, C165S066000

Reexamination Certificate

active

07013953

ABSTRACT:
A waste heat recovery system includes: a tank; heat exchange pipes connected with one another in the form of a ‘S’ shape in multiple steps inside the tank and having city water flow pipes bound up into a bundle; circulation leading plates mounted between the heat exchange pipes for inducing a flow of waste water; movable nozzles mounted on the circulation leading plates and connected with a high pressure water pipe for spraying high pressure water onto the surface of the heat exchange pipe or having a brush for cleaning the surface of the heat exchange pipe; a nozzle driving part for driving the movable nozzle by means of a driving motor; and waste water inlet and outlet for flowing hot waste water from the upper portion to the lower portion of the tank and city water inlet and outlet for flowing city water from the lower portion to the upper portion of the tank.

REFERENCES:
patent: 3645420 (1972-02-01), Machado
patent: 4025362 (1977-05-01), Frauenfeld
patent: 4562885 (1986-01-01), Pausch
patent: 4577680 (1986-03-01), Clem et al.
patent: 4589898 (1986-05-01), Beaver
patent: 4884416 (1989-12-01), Hwang
patent: 4907542 (1990-03-01), Maeyama et al.
patent: 5279357 (1994-01-01), Kennon et al.
patent: 681174 (1993-01-01), None
patent: 61-149721 (1986-07-01), None
patent: 05-322150 (1993-12-01), None
patent: 09-296998 (1997-11-01), None
patent: 2002-90167 (2002-11-01), None

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